Anybody tried a 150 on the FRONT of a FXST?

I'm swapping my 21 for a 16 on my '95 FXSTC and would like to know if anyone knows if a 150/80-16 will fit without major mods. I've seen a 180 on the front of a Fatboy, but it had no front fender and material machined out of the fork legs. I'm not that committed, but I'd be disappointed if I went with a 130 and then found out I could've gone with a 150. Thanks in advance for any advice, Ijit.